Flying LHR-DEL (and return) in Jan 2025. Looking at trackmyseat, they have started using ZBJA for some of the days in November, but about 1-2x/week. When I go to book seats, they layout looks like CS. Will there by rollouts between now and Jan 2025 of more CS ?

(as a side note, if I pay (using avoid or $$) for seats in CS and we are switched back to CW, how do they 'translate' the seat choice? We will most likely choose two K seats in front/back of each other. How does that translate?
thanks ◡̈